of oakland



May 17,1927

J. c. wEu sMAN AIR DEFLECTING MEANS FOR CL OSED TOP BURNER CHAMBERS 0F GAS STOVES .INVENTOR v Jb/m C. Mums/v '4 AVTTORNEY Patented May 17, 1927.

UNITED: "STATES PATENT oFFl'cE, f

JOHN .C. WEISMAN, OF OAKLAND, CALIFORNIA, ASSIGNOR TO HAMMER-BRAY y i PANY, OF OAKLAND, CALIFORNIA, CORPORATION OF CALIFORNIA.

AIR-DEFLECTING MEANS FOR CLOSED-TOP BURNER CHAMBERS OF G'AS S'l OVES.

Application filed September 22, 1924. Serial No. 739,008. I

My invention relates to means in connec tion with the burner chamber of a closedtop gasstove, for directing the air flowing through said chamber so that all the burners therein may receive the required amount of fresh air for proper combustion.

Most stoves, and particularlyranges, are equipped with front and rear gas burners which are positioned in what may be termed I a burner chamber. Where a grate has been superposed over the burners to provide acooking top, no difficulty has been experienced, in the matterof the adequate external supply of air at the burners. However, when the burner chamber has been covered with acclosed or solid top, it has been found that the rear burners receive less fresh air for-combustion than do the front burners, since the burner compartment is usually open only at the front. In accordance with such difficulty, it is an object of my invention to provide means for insuring an adequate supply of fresh air at front and rear burners alike and thus insure proper combustion of the fuel.

Another object of the invention to provide means of thecharacter described which will; allowthe use of a drip pan. of usual form andniaximum size. I

The invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth in the following description of the preferred form of my invention which is illustrated in the drawings accompanying and forming part of the specification. It is to be-understooi'l that I do not limit myself to the showing made by the said drawings and descriptions, as I may adopt Variations of the preferred form within the scope of my invention as set forth in the claims.

Referring to said drawings Figure l is a plan view of a stove cmbodying one form of the air deflecting means of my invention, parts being broken away to more clearly disclose the construction.

Figure 2 is a vertical section of a portion of the stove, the plane of the section being indicated by the line 2 2 of Figure 1.

Figures 3 and 4 are fragmentary views similar to Figures 1 and 2 respectively, showing another form of the invention.

As illustrated in the drawings, the device of my invention is embodied in a stove i 7 provided with a closed or solid gas cookingtop (3. The latter comprises. a top-gasburner compartment 7 whose sides are defined by walls 8 and. 9 and a rear wall 12. The bottom of the compartment is preferably defined by a plate 13', while the top is closed by a cooking plate 14, here shown provided with opemngs ltinormally closed. by means of lids 17. The compartment 7-is desirably shallow so that a maximum space may be available belo\v the compartment for other uses. i

Arranged in the compartment 7 are-front and rear gas burners 18 and 19 respectively, here shown supported in spaced relation from the top and bottom of thecompartment by means of cross rods2l and in alignment with the lid openings 16. The :proper gas mixture for the burners is arrangedto be supplied thereto through pipes 22 connected to the gas manifold 23'at the .front of the stove. Air for completing combustion is arranged to enter the compartment through the opening 2% at the front thereof, and the products of combustion are; arranged to discharge through. a vent 26 located at the rear of the, compartment and with at least a portion thereof in ahigher plane than is the top of the opening 24;. With the burners in operation, it rwill1now zbe noted that a draft will be set up fromtheopcning 24 to the vent 26 to draw air through the compartment for completingthe combustion. process at the burners. Since the portionzof the indrawn air passing the burnerscro'sses the front burners first, the major 4 portion of oxygen insuch air is used to complete the combustion process at these burners, with the result that the air which'reaches the rear burners, seldom provides sufficient oxygen for them. In addition to the foregoing, it is found that the portion of the in drawn air passing adjacent the bottom of the compartment, by virtue of the fact that it is cooler than the layers of air above it, tends, with the usual compartment design, to maintain its path adjacent the bottom and beneath the burners tofinally escape from the compartment without having served as an aid to the combustion at any of the burners,

In accordance with my invention, meansare provided for deflecting the layer of fresh air moving adjacent the bottom of the compartment so that it will be caused to move directly through the combustion space of rest air spaceor pocket 28 which is open at the front is formedbetween the plate and the bottom of the compartment, it will now be. noted that when the fresh air moving along the bottom of the compartment appreaches the pocket, the air, not being); able to enter the pocket, will be detlected upwardly and, across the burners directly into the combustion spa ce.

- In Figures 3' and t, deflection of the bottom layer of air is arranged to be elli'eeted directly lay-contact with one or more defiect'or plates 31 rather than by contact with abody of dead air. As here shown, one of said platesis provided for each of the rear burners and preferably extends downwardly from the rear portion of the latter to a point closely adjacent the-bottom of the compartment. The plates 31 preferably present a concave surface to the'lncoming air. it will be clear that. with the plates thus formed "and positioned that the bottom layer of air will be deflected upwardly and concentrated against their burners.

It will further be noted that the deflecting means of my invention does not interfere with the insertion and use of the usu'al type of drip-pan in the compartment. As a matter of fact, the bottom of the compartment may be in the form of a removable drip-pan or a permanent plate on which a removable drip-pan 33, as illustrated, may

I claim:

1. In a gas-stove provided with a closed top-burner chamber having a fresh air inlet openin adjacent the front and bottom thereo 'and a discharge opening adjacent the top and rear thereof, front and rear burners in said chamber spaced from the top and bottom thereof, the front major portion of the chamber being entirely unobstructed, and a plate at the rear of the chamber lying between the bottom of said cham her and discharge opening and having a deflecting portion thereof underlying said rear burner and extending transversely of the stream of fresh air flowing 'tli'roug'h said chamber.

2. In a. stove provided with a closed top gas-l'iurner chamber having a fresh air inlet adjacent a side and bottom thereof and a discharge opening adjacent a side and top thereof, a gas burner disposed in said chamber to permitan unrestricted flow of air thereagainst both, above and below it, and a battle plate in said chamber extending forwardly from a point rearwardly of said burner and in spaced relationtherefrom and arranged to cause the air passing thereover 41-. In a stove provided with a closed topgas-burner chamber having a fresh air inlet adjacent the front and bottom thereof and a. front major portion thereof entirely unobstructed and having a discharge opening adijaceut the front and rear thereof, front and rear top-gas burners in said chamber, and a deflecting member defining a raised bottom at the rear of said. chamber underlying a. portion of said rear burners and removed from under said front burners.

In testimony whereof, I have hereunto set my hand at Oakland, California, this 10th day of September, 1924.

JOHN C. WEISMAN. 

